Valve-spring releaser and retainer.



E. N. KRAEMBR.

VALVE SPRING RELEASER AND RETAINER.

APPLICATION FILED MAY 24. 1911.

I 1,@35,97%. P en ed Aug. 20, 1912.

I setforth in the claims, and all EDWIN 1\T. KRAEM B,OF CEDARBUR WISCONSIN- VALVE-SPBING RELEASER AND RETAINER.

Specification of Letters Patent.

BatentemAug'. 20,1912.

Application filed May 24, 1911, Serial No. 52am To'all whom it may concern Be it known thatI, Enwm N. 1{RAE1\1ER,-2L citizen of the United States, residing in Gedarburg, in the county of Ozaukee and State of Wisconsin, have invented new ,and useful Improvements in Valve- Spring Releasers and Retainers, of which the following is a description, reference being hadto-the accompanying drawings, which are a part of this specification.

This invention relates to improvements in valve spring removers more particularly adapted for removing, retaining and replacing the coiled springs surrounding the stems of exhaust and other valves of internal combustion engines. a i

It is necessary tofrequently remove ex: haust and other valves in order to clean or grind the. same and as the valve springs are of considerable strength it is rather diificult to compress the springs to'withdra'w the cotter pins or other fastening means to remove the .valves. I

It is one of the objects of this invention to provide a valve spring remover which may be easily positioned and operated'to engage an'd compressa valve spring preparatory to the removal of the valve from the engine.

A further object of this invention is to provide a valve spring remover which is simple in construction and o'peration and is inexpensive to manufacture.

-. A further object of the invention is; to

provide a valve spring remover which is adapted to securely hold a valve sprmg 1n compressed position when removed from the engine or to compress a new spring to be replaced around the valve stem.

A further object of the invention is to provide a valve spring remover which is very compact in size and. may be easily folded to occupy but a minimum amount of space.

With the above, and other objects in view, the invention consists of the valve spring remover and its parts and combinations as equivalents thereof.

In the accompanying, drawing in which the same reference characters indicate the same parts in all of the views Figure 1 is a side, view of the improved spring remover showing the manner of inserting the jaws of the device in position preparatory to compressing the springengaged, the engine to which the spring is connected beingshown in section; Fig. 2 is aside view of-the valve spring remover and a portion of the valve on a larger scale with the'spring in compressed posit-ion, parts of the remover broken away and other parts shown in section; 'Fi-g. 3'isa top view of the remover;

"and Fig. 4 is a front view thereof', parts beingin section; I

' Referring to the drawing the numeral 8 indicates a portion of aninternal combustion engine and9 the exhaust valve thereof which is raised or opened by the cam 10. The lower end. ofthe-valve-stem 11 of the valve 9 rests on top of the cam rod 12 which servesto lift; said valve against: thd

tension of the valve spring. 13 surrounding the stem of the valve. .and interposed between the valve casing 14 anda cotter pin and washer 15 carried by the valve stem. 1

In order to withdraw or replace the cotter pins or other fastening means it is necessary tocompress the coiled springs hearing thereon and to accomplish this result the valve spring remover is provided. This remover comprises a pair of like levers 16 pivotally connected at their rear ends to. a

transverse member 17. The forward ends or jaws of the levers are bifurcated or provided with end recesses 18 to accommodate thestem of the valve when in engagement with the valve spring. The forward ends of. the levers are also provided with annular depressions 19 formed on their inner faces" to accommodate the end convolutions of the 'valve springs and the washers to prevent their accidental disengagement with said aws.

1 Toggle links 20 interposed between the levers 16 and pivotally-connected at their outer ends to the forward end said levers have their inner en s pivotally connected to the inner end of a threaded rod 21 which extends loosel through a medial opening 22 provided 1n the transverse member 17. The levers are provided with elongated recesses 20 into which the link ends extend and are pivoted to the side walls of the levers forming the recesses. A

ortions of 7 thumb nut 23 threaded on the outer end of the rod 21 and bearing against the transverse member serves to close or open the jaws of the levers. The bifurcated ends of the levers are somewhat pointed as indicated by the numeral 24 to more easily slip between the convolutions of the springs or adjacent parts.

From the foregoing description it will be seen that in order to remove a valve it is only necessary to straddle the spring ends,

turn the thumb screw to compress the springs so that the cotter pins may be withdrawn from the valve stem and then remove the valve.

The spring may be kept in compressed position to be replaced'or it may be released fromthe remover by unscrewing the thumb screw and the remover may be used in connection wlth other valves. v

When not in use the aws may be closed together and the device will occupy but a small amount of space and may be easily stored away.

What I claim as my mventlon 1s:

1. A valve spring remover, comprising a pair of levers pivotally connected at. one

end and havin "bifucated'jaws formed on their opposite ree ends, links pivotally connected to the bifurcated end portions of the ing therethrough, links each pivotally connected at one end to oneof the bifurcated and provided with a medial opening extendend portions of the levers, a threaded rod pivotally connected to the opposite ends of the links and ext-ending through the medial opening of the transverse member, and

nut threaded on the rod and bearing against the transverse member.

In testimony whereof, I affix mysigna ture, in presence of two witnesses. EDWIN N. KRAE ER, I

Witnessesz' A KATHERINE HOLT, C. H. KEENEY. 

